核心筒结构残余位移模型及恢复力模型研究  

Study on residual displacement model and restoring force model of core walls

作　　者：汪梦甫[1] 颜玉环 Wang Meng-fu;Yan Yu-huan(College of Civil Engineering,Hunan University,Changsha 410082,China)

机构地区：[1]湖南大学土木工程学院,湖南长沙410082

出　　处：《工程抗震与加固改造》2024年第4期1-11,共11页Earthquake Resistant Engineering and Retrofitting

基　　金：国家自然科学基金项目(52078203);江苏省研究生科研创新计划资助项目(KYCX20-2773)。

摘　　要：为了研究核心筒结构的残余位移及滞回特性,本文利用国内23个核心筒试件参数及拟静力试验结果,采用逐步回归分析建立了核心筒结构的残余位移预测模型,并据此给出了减小核心筒残余变形的措施与方法,基于三折线骨架模型,对屈服点、峰值点、极限点的荷载与位移进行计算分析,进而构建了核心筒结构的恢复力模型。研究结果表明:本文建立的核心筒结构残余位移预测模型与结构恢复力模型与试验结果吻合度较高,能够较为真实地反映核心筒结构的滞回特性,弥补了国内对于核心筒结构恢复力模型研究的不足,为核心筒在弹塑性分析领域以及残余位移控制方面提供一定理论依据。To study the residual displacement and hysteretic characteristics of core walls,on the basis of the parameters and pseudo-test results of 23 core walls in China,the residual displacement prediction model of core walls was established by stepwise regression analysis method,whilst some measures of reducing the residual displacement of core walls were proposed.The load and displacement corresponding to the yield point,peak point and ultimate point based on the tri-linear skeleton curve model are calculated and analyzed,and then a hysteretic model of core walls is constructed.The research results show that the proposed residual displacement prediction model and hysteretic model are in good agreement with the test results,which can realistically reflect the hysteretic characteristics of core walls,make up for the deficiency of research on hysteretic model for core tubes in China,and can also provide some theoretical basis for the field of elastic-plastic analysis as well as residual displacement control for core walls.

关 键 词：核心筒 残余位移 三折线骨架曲线模型 恢复力模型 

分 类 号：TU398[建筑科学—结构工程]